Experimental device for measuring dynamic contact angle under high-temperature and high-pressure environments

Abstract

The invention belongs to the technical field of CO2 geological storage and provides an experimental device for measuring a dynamic contact angle under high-temperature and high-pressure environments. The experimental device comprises a single-opening high-temperature and high-pressure kettle, a solution stirrer, a pump, a valve, a rock sample, an injection needle, a conical-surface connector, a heating belt, a matrix platform, a red copper gasket, a sealing opening ring, a pressing ring, a pressing bolt, an annular optical fiber illumination lamp, a computer, a high-frequency camera, a temperature controller, a sapphire sight glass, a teflon sealing ring, a pressure relief valve, a pressure gauge, a thermocouple, a mini-type rolling bearing, a CO2 gas bottle, an outer cover, gears, a shaft, magnetic bodies and an inner cover. The experimental device is used for controlling a rotary angle of an outer magnetic body through engaging transmission of a small gear and a large gear; an inner magnetic body is driven by magnetic transmission; the inclining angle of the matrix platform is finely adjusted, a liquid drop movement trend and a liquid drop form are accurately captured and the dynamic contact angle is analyzed and measured.

Description

technical field [0001] The invention belongs to CO 2 The technical field of geological storage relates to an experimental device for measuring dynamic contact angle in a high temperature and high pressure environment. Background technique [0002] In recent years, the global climate has changed dramatically, CO 2 Emission reduction is an action goal that the international community has reached a consensus on and has been working hard for. CO 2 Geological storage as the most promising CO 2 One of the emission reduction programs has aroused widespread concern around the world. [0003] In a geological storage environment, CO 2 The contact angle of the / brine / rock system affects the CO 2 The migration process in the storage medium, conversely, CO 2 The migration process also affects the change of the contact angle, and the static contact angle is transformed into a dynamic contact angle. Due to the roughness and chemical heterogeneity of the rock surface, CO 2 There is...

AI Technical Summary

Problems solved by technology

The inclination angle in the falling wedge plate is a fixed value, and the inclination angle cannot be adjusted during the experiment. It is extremely difficult to capture the moment when the droplet is about to move, and it is easy to cause distortion of the measured dynamic contact angle.

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